Re: [PATCH V4 4/4] kvm: add a check if pfn is from NVDIMM pmem.
On 08/22/2018 03:58 AM, Zhang Yi wrote:
bool kvm_is_reserved_pfn(kvm_pfn_t pfn)
{
- if (pfn_valid(pfn))
- return PageReserved(pfn_to_page(pfn));
+ struct page *page;
+
+ if (pfn_valid(pfn)) {
+ page = pfn_to_page(pfn);
+ return PageReserved(page) && !is_dax_page(page);
+ }
This is in desperate need of commenting about what it is doing and why.
The changelog alone doesn't cut it.